I'd like to convert this formula 
\begin{equation}
l^2 =\frac{c\hbar}{eH}
\end{equation}
where $l$ is a length, and $H$ is in oersted, to SI units.
I am pretty sure it uses CGS, since Oe is mentioned in the text, and its from a theory paper ([Kawabata1980](http://dx.doi.org/10.1016/0038-1098(80)90644-4), eq.3).